GIS Resources

A digital elevation model (DEM) is a 3D CG representation of a terrain's surface created from a terrain's elevation data.

Calgary

• New! City of Calgary LiDAR 2m, by ATS section (at SANDS)
• City of Calgary 6.5m point spacing, by ATS section (at SANDS) | description
  • processing: opening Calgary DEM files in ArcGIS10

 Alberta

• Calgary Regional Partnership 2017 10m, Calgary-Chestermere (at SANDS)
• LiDAR 15m, description | index and download
  • ASCII Format By Township (meridian-range-township)  | Contacts SANDS (maps@ucalgary.ca) to obtain.
• AltaLIS 10m, 1:20k grid (quarter 1:50k NTS grid) and province wide (seamless) (at SANDS)
• AltaLIS raw DEMs open data, 1:20k grid
  • processing: contact SANDS for instructions
• DMTI 30m, 1:50 NTS grid | download
  • processing: ArcToolbox -> Conversion Tools -> ASCII to raster
  • define projection: ArcToolbox -> Data Management Tools -> Projections -> Add coordinate system -> import from dem file
• ArcCanada3, province wide | download
• Grand Prairie LiDAR, divided by quarter section

Canada

• DMTI 30m, 1:50k NTS grid, Canadian provinces | download
  • process and define: see above
• ArcCanada3, provinces | download
• Govt of Canada Geospatial Data Extraction tool
  • define geographic area and download topographic and elevation data
  • Canada3D - DEM of Canada, 30m and 300m
  • High Resolution DEM now includes Canadian Arctic 5m

United States

• USGS National Map Elevation

International 

• ArcticDEM an NGA-NSF public-private initiative to produce a high-resolution, digital surface model of the Arctic using optical stereo imagery, high-performance computing, and open source photogrammetry software
• ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer)
  • coverage: global, 1 arc second (30m) resolution, 1 x 1 degree tiles, geotiff format
  • use USGS Earth Explorer to download
• GTOPO30
  • coverage:  global, grid spacing of 30 arc seconds (approx 1 km)
  • use USGS Earth Explorer to download
• OpenTopography - distributor of free high-resolution topographic data, related tools, and resources
• SRTM (Shuttle Radar Topography Mission)
  • coverage: latitude 57 south - 61 north, 30m resolution